US8550536B2 - Tailgate from fibre-reinforced thermoplastic plastic - Google Patents

Tailgate from fibre-reinforced thermoplastic plastic Download PDF

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Publication number
US8550536B2
US8550536B2 US13/511,171 US201013511171A US8550536B2 US 8550536 B2 US8550536 B2 US 8550536B2 US 201013511171 A US201013511171 A US 201013511171A US 8550536 B2 US8550536 B2 US 8550536B2
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United States
Prior art keywords
fibre
continuous
carrying structure
tailgate
main carrying
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Application number
US13/511,171
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English (en)
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US20120280533A1 (en
Inventor
Matthias Gächter
Diego Jaggi
Andreas Rüegg
Stefan Ziegler
Norbert Stötzner
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Weber Automotive AG Holding
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Weber Automotive AG Holding
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Assigned to WEBER AUTOMOTIVE AG-HOLDING reassignment WEBER AUTOMOTIVE AG-HOLDING ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GACHTER, MATTHIAS, JAGGI, DIEGO, STOTZNER, NORBERT, ZIEGLER, STEFAN, RUEGG, ANDREAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/10—Doors arranged at the vehicle rear
    • B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
    • B60J5/107—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans constructional details, e.g. about door frame, panels, materials used, reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/10—Doors arranged at the vehicle rear
    • B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans

Definitions

  • the invention relates to a tailgate or rear door for a motor vehicle with a carrying structure of a fibre-reinforced thermoplastic plastic with hinges, a lock and a rear window.
  • a fibre-reinforced main carrying structure is to be created without additional metal reinforcements.
  • the single-piece main carrying structure with a peripheral, flexurally resistant frame with integrated continuous-fibre bands in a vertical alignment to the surface of the tailgate, in combination with the non-positively connected rear window and with bead-like stiffenings of the fibre-reinforced moulding compound of the frame, results in improved mechanical characteristics with regard to stiffness and strength, a significantly reduced weight, and a reduced, simplified manufacturing effort.
  • FIG. 1 , 2 examples of tailgates according to the invention, with a main carrying structure of fibre-reinforced thermoplastic plastic with a peripheral frame with integrated continuous-fibre bands, in a vertical arrangement;
  • FIG. 3 vertical arrangements of continuous-fibre bands with respect to the surface of the tailgate
  • FIG. 4 a vertical section through a tailgate according to the invention
  • FIG. 5-8 in section, arrangements of continuous-fibre bands in the frame of the main carrying structure
  • FIG. 5 with a vertical continuous-fibre band in a bead
  • FIG. 6 with a horizontal continuous-fibre band at a vertical distance to the surface
  • FIG. 7 with an upper and with a lower horizontal continuous-fibre band
  • FIG. 8 with a vertical and a lower horizontal continuous-fibre band
  • FIG. 9 a main carrying structure with a diagonal or cross-shaped arrangement of continuous-fibre bands
  • FIG. 10 a , 10 b , 10 c a bead-like or trough-like beam with a diagonal ribbing;
  • FIG. 11 a , b a vertical continuous-fibre band, in a rib
  • FIG. 12 a plastic outer covering which is connected to the main carrying structure and the rear window;
  • FIG. 13 a further example of a tailgate with a greatly rounded frame and with two continuous-fibre bands.
  • FIGS. 1 and 2 show examples of a tailgate 1 or rear door, according to the invention, for a motor vehicle, with a structure of fibre-reinforced thermoplastic plastic and with hinges 5 , a lock 6 and a rear window 2 .
  • the tailgate comprises a single-piece main carrying structure 10 with a peripheral, flexurally resistant frame 11 , with an upper transverse beam 12 , two lateral longitudinal beams 13 , 14 and at least one lower transverse beam 15 .
  • the main carrying structure consists of a fibre-reinforced moulding compound 20 with at least two impregnated, integrated continuous-fibre bands 21 and which is connected to the rear window 2 with a non-positive fit and together with this forms a flexurally resistant structure.
  • the continuous-fibre bands 21 in sections are integrated into the frame 11 in an arrangement vertical (v) to the surface H of the tailgate, by way of the continuous-fibre bands 21 being arranged vertically to the surface H and/or at a vertical distance d to the surface H (see FIG. 3 ).
  • the continuous-fibre bands are connected to one another by way of spatial spacings of the fibre-reinforced moulding compound 20 as force-transmitting and stiffening connection regions 22 , and the frame 11 comprises bead-like stiffenings 24 of the moulding compound 20 or is designed in a bead-like manner.
  • the bead-like frame 11 can additionally also comprise rib-like stiffenings 25 .
  • FIG. 3 in section shows vertical arrangements of the integrated continuous-fibre bands 21 in a bead 24 of the frame 11 with respect to the outer surface H of the tailgate:
  • FIGS. 1 and 2 have the following vertical arrangements of the continuous-fibre bands in the frame 11 :
  • FIG. 1 shows two vertical (v) continuous-fibre bands 21 . 1 and 21 . 2 in the lateral longitudinal beams 13 and 14 (see FIG. 5 ), and in the lower transverse beam 15 a lower horizontal (h) continuous-fibre band 21 . 3 at a distance d to the surface and an upper horizontal continuous-fibre band 21 . 4 at the surface H (see FIG. 7 ).
  • FIG. 2 shows two different variants of possible arrangements in the lateral longitudinal beams:
  • Both variants in the upper transverse beam 12 have a horizontal (h) continuous-fibre band 21 . 1 and in the lower transverse beam 15 a horizontal (h) continuous-fibre band 21 . 6 at a distance d to the surface H and a vertical (v) continuous-fibre band 21 . 5 (see FIG. 8 ).
  • the continuous-fibre bands 21 can also be bent over in the corners 17 of the frame 11 and e.g. be bent from a longitudinal beam into a transverse beam, as in FIG. 1 the continuous-fibre bands 21 . 1 , 21 . 2 are bent from the longitudinal beams 13 , 14 into the upper transverse beam 12 up to the hinges 5 .
  • the continuous-fibre band 21 . 4 at the corner 17 is bent into the lower transverse beam 15 , in FIG. 2 on the right.
  • connection regions 22 with which the continuous-fibre bands are connected to one another in a force-transmitting and stiffening manner by way of spatial projections (e.g. bead-like or rib-like) of the fibre-reinforced moulding compound 20 are also very important, e.g. in the corners 17 of the frame 11 and in FIG. 1 , in the upper transverse beam 12 between the continuous-fibre bands 21 . 1 and 21 . 2 .
  • FIGS. 1 and 2 have an additionally profiled bead-like transverse beam 16 on the lower edge of the rear window 2 , here with a holder 28 for a wiper motor 7 .
  • This transverse beam 16 can also comprise an additional continuous-fibre band 21 . 7 ( FIG. 2 ).
  • the main carrying structure mostly also comprises openings 32 , as FIGS. 1 and 2 show, which are covered with outer coverings 27 on the main carrying structure 10 .
  • the continuous-fibre bands 21 are preferably designed such that they extend up to the load accommodation locations 34 , so that acting forces can be accommodated directly by the continuous-fibre bands: in FIG. 1 , at load accommodation locations 34 from the spring damping elements 8 and from the hinges 5 by the continuous-fibre bands 21 . 1 and 21 . 2 and from the lock 6 by the continuous-fibre bands 21 . 3 and 21 . 4 .
  • inserts 28 for fastening the lock 6 , hinges 5 , spring damping elements 8 and the wiper motor 7 as load accommodation locations 34 , can simply be integrated into the main carrying structure 10 for accommodating engaging forces.
  • FIG. 4 schematically shows a vertical section through a tailgate (similar to FIG. 1 ) with vertical (v) continuous-fibre bands 21 in the longitudinal beams 13 , 14 .
  • the main carrying structure 10 here as an outer skin or bodywork surface, in a region next to the rear window 2 additionally comprises light plastic outer coverings 27 which are fixed or preferably bonded on the main carrying structure 10 , as well as are painted or coloured. Such outer coverings can be attached below ( 27 . 1 ), above ( 27 . 2 ) or laterally next to the rear window.
  • a plastic rear spoiler 30 as an outer covering can also be fixed or bonded on the main carrying structure 10 .
  • the main carrying structure 10 with the bead-like, peripheral, flexurally resistant frame 11 can preferably be covered on the outer viewed surface (H) outside—above all below—the rear window 2 by way of a plastic layer as an outer covering 27 which is connected to the main carrying structure 10 with a non-positive fit and thus can additionally increase the bending or torsional stiffness of the tailgate.
  • a rear spoiler 30 is arranged above the rear window, wherein with this, additional components 31 such as a third braking light, an antenna or a reverse drive camera can be built in.
  • An additional inner covering 29 as an inner trim i.e. a felt layer or a light plastic layer
  • this inner covering 29 can also consist of fibre-reinforced plastic (with or without continuous-fibres) and be connected to the main carrying structure with a non-positive fit and thus form an additional stiffening.
  • Spring damping elements 8 here are supported on the hinges 5 with holders 28 and on the chassis 3 .
  • FIGS. 5-8 in cross section illustrate different arrangements of continuous-fibre bands 21 in a bead 24 of the frame 11 with an arrangement in the vertical direction (v) to the surface H of the tailgate.
  • the impregnated continuous-fibre bands 21 are integrated into the moulding compound 20 .
  • the continuous-fibre bands are preferably covered by the moulding compound 20 , in regions where the main carrying structure forms an inner viewed surface 35 (and is not covered by an inner trim), so that the viewed surface 35 is formed by the moulding compound 20 , as FIGS. 5-7 show.
  • FIG. 5 shows an integrated vertical (v) continuous-fibre band 21 in a trough or bead 24 of fibre-reinforced moulding compound 20 .
  • This can additionally comprise a ribbing 25 as e.g. is shown in FIG. 10 , and e.g. form longitudinal beams 13 , 14 .
  • FIG. 6 shows a bead with an integrated horizontal (h) continuous-fibre band 21 at a vertical distance d to the surface H, and this bead which here is formed by the rear window 2 which is non-positively bonded on, and in combination with this forms a flexurally resistant frame 11 .
  • FIG. 7 shows an example of a frame 11 with a horizontal (h) continuous-fibre band 21 . 1 on the surface H and with a horizontal continuous-fibre band 21 . 2 at a vertical distance d to the surface in a bead 24 .
  • the structure as also that of FIGS. 5 and 8 , alone, also without the rear window, forms a flexurally resistant frame structure 11 .
  • An additional, bonded-on light plastic layer as an outer cover 27 can act in an additionally reinforcing manner, above all in the region below the rear window.
  • FIG. 8 shows a bead 24 with a lower horizontal continuous-fibre band 21 . 1 at a distance d to the surface H and with a vertical continuous-fibre band 21 . 2 which here lie (visibly) on the inner surface.
  • a thicker vertical continuous-fibre band 21 . 3 further up towards the surface H can be combined with the continuous-fibre band 21 . 1 together into a flexurally resistant structure.
  • FIG. 9 shows further variants of flexurally resistant main carrying structures 10 with cross-like, i.e. crossing, vertically arranged continuous-fibre bands 21 . 1 and 21 . 2 or with diagonal ( 26 ) continuous-fibre bands 21 . 4 and 21 . 5 as well as 21 . 3 in the region below the rear window 2 , and these extend to the lower corners 17 of the main carrying structure 10 .
  • Vertical continuous-fibre bands 21 . 1 , 21 . 2 can be deformed locally in each case by half the height (d/2) at the crossing location 26 , in order to be able to cross within a given height (d).
  • the crossing location could be formed by an upper and a lower horizontal continuous-fibre band, as well as a crossing vertical continuous-fibre band which lies therebetween.
  • FIGS. 10 a , 10 b in two views, show a carrying structure or a longitudinal beam or transverse beam which are preferably designed as a trough or bead 24 with a diagonal or cross-like ribbing 25 .
  • All integrated continuous-fibre bands 21 are integrated into beadlike and/or rib-like structures of the fibre-reinforced moulding compound 20 .
  • FIG. 10 c additionally shows a non-positively connected cover layer 27 , with which a closed, torsionally stiff profile is formed, e.g. as an upper transverse beam 12 in FIG. 1 .
  • FIGS. 11 a, b in two views show an example with a vertical continuous-fibre band 21 in a rib 25 which merges from a bead wall 24 in a continuous manner into the oppositely lying bead wall.
  • tailgates 1 or rear doors Lighter, simply constructed main carrying structures 10 and thus tailgates 1 or rear doors can be created with the construction, according to the invention, of the main carrying structure 10 of fibre-reinforced moulding compound 20 which permits any desired shapes, and with integrated continuous-fibre bands 21 which are arranged and shaped optimally according to the mechanical load demands. This is also accomplished with improved mechanical characteristics and a rational, inexpensive manufacture. Moreover, an extensive shaping freedom for tailgates or rear doors of the most varied of types is made possible, e.g. also rear doors with laterally arranged lock and hinges. For this, also the integrated continuous-fibre bands 21 can preferably be bent and profiled accordingly.
  • the main carrying structure 10 can be manufactured with an extrusion pressing method or with an injection moulding method with shaped or shape-stabilised continuous-fibre bands or continuous-fibre profiles, which are inserted into a tool mould.
  • Such an advantageous manufacturing method is e.g. specified in WO 2004/024426.
  • the impregnated continuous-fibre bands or profiles preferably consist of UD (unidirectional) continuous-fibres in a polymer matrix (e.g. continuous glass fibres in polypropylene PP) and the fibre-reinforced moulding compound 20 preferably has an average fibre length of at least 2 mm (although shorter fibres could also be used).
  • UD unidirectional continuous-fibres in a polymer matrix
  • the fibre-reinforced moulding compound 20 preferably has an average fibre length of at least 2 mm (although shorter fibres could also be used).
  • FIG. 12 as a further variant comprises a frame 11 , onto which in a part region, a plastic outer trim 27 and thereabove the rear window 2 is bonded.
  • FIG. 13 also shows a further variant of a tailgate 1 with greatly bent longitudinal beams 13 , 14 which at the bottom merge into a rounded transverse beam 15 .
  • the rear window 2 here is bent around in the direction of the C-column.
  • the continuous-fibre reinforcement consists of only two vertical continuous fibre bands 21 . 1 and 21 . 2 which, beginning at the hinges 5 , extend through the longitudinal beam into the transverse beam 15 and there overlap and are non-positively connected ( 22 ).
  • a plastic rear spoiler 30 here can for example be attached below the window 2 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Superstructure Of Vehicle (AREA)
  • Reinforced Plastic Materials (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
US13/511,171 2009-11-25 2010-11-22 Tailgate from fibre-reinforced thermoplastic plastic Active US8550536B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1811/09 2009-11-25
CH18112009 2009-11-25
PCT/CH2010/000293 WO2011063538A1 (de) 2009-11-25 2010-11-22 Heckklappe aus faserverstärktem thermoplastischem kunststoff

Publications (2)

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US20120280533A1 US20120280533A1 (en) 2012-11-08
US8550536B2 true US8550536B2 (en) 2013-10-08

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US (1) US8550536B2 (ru)
EP (1) EP2504186B1 (ru)
CN (1) CN102712241B (ru)
RU (1) RU2537011C2 (ru)
WO (1) WO2011063538A1 (ru)

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US8979161B2 (en) * 2013-03-15 2015-03-17 GM Global Technology Operations LLC Low mass truck end gate utilizing aluminum stampings and extrusions
US20150210147A1 (en) * 2012-10-17 2015-07-30 Daikyonishikawa Corporation Vehicle back door
KR20160067936A (ko) * 2013-10-07 2016-06-14 사빅 글로벌 테크놀러지스 비.브이. 폐쇄 단면 구조, 중공 형상, 차량 부품
CN105667270A (zh) * 2015-12-31 2016-06-15 成都航天模塑股份有限公司 一种汽车塑料尾门连接结构
US9649917B2 (en) * 2014-07-30 2017-05-16 Toyota Jidosha Kabushiki Kaisha Vehicle resin back door structure
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US10059178B2 (en) * 2015-12-16 2018-08-28 Honda Motor Co., Ltd. Tailgate structure
DE102018204732A1 (de) 2018-03-28 2019-10-02 Ford Global Technologies, Llc Heckklappe für ein Kraftfahrzeug und Verfahren zum Herstellen einer solchen Heckklappe
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US10434846B2 (en) 2015-09-07 2019-10-08 Sabic Global Technologies B.V. Surfaces of plastic glazing of tailgates
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US10690314B2 (en) 2015-09-07 2020-06-23 Sabic Global Technologies B.V. Lighting systems of tailgates with plastic glazing
US10723209B2 (en) * 2017-12-19 2020-07-28 Toyota Jidosha Kabushiki Kaisha Resin back door for vehicle and method of manufacturing the same
FR3104497A1 (fr) * 2019-12-17 2021-06-18 Compagnie Plastic Omnium Se Hayon de véhicule automobile
US11104212B2 (en) * 2018-10-11 2021-08-31 Compagnie Plastic Omnium Bodywork panel comprising added stiffening elements
US11142049B2 (en) * 2017-12-21 2021-10-12 Toyota Jidosha Kabushiki Kaisha Resin back door for vehicle
US11207956B2 (en) * 2018-12-21 2021-12-28 Compagnie Plastic Omnium Bodywork part comprising a lock loop
US11267173B2 (en) 2015-09-07 2022-03-08 Sabic Global Technologies B.V. Molding of plastic glazing of tailgates
US11466834B2 (en) 2015-11-23 2022-10-11 Sabic Global Technologies B.V. Lighting systems for windows having plastic glazing
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DE102016213405A1 (de) * 2016-07-22 2018-01-25 Bayerische Motoren Werke Aktiengesellschaft Klappe für ein Kraftfahrzeug und Verfahren zur Herstellung einer Klappe, Kraftfahrzeug
JP6380487B2 (ja) * 2016-08-29 2018-08-29 トヨタ自動車株式会社 車両用バックドア
JP6950124B2 (ja) * 2016-11-29 2021-10-13 ダイハツ工業株式会社 車両用バックドアインナパネル
WO2018108252A1 (en) * 2016-12-13 2018-06-21 Toyota Motor Europe Vehicle tailgate structure
DE102017102881A1 (de) 2017-02-14 2018-08-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren für die Herstellung eines Mehrkomponentenbauteils eines Fahrzeugs
EP3582985B1 (en) * 2017-02-16 2023-07-19 Magna Exteriors Inc. Infrared welded liftgate assembly and process of making same
JP2018172048A (ja) * 2017-03-31 2018-11-08 株式会社豊田自動織機 車両用バックドア
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JP7270415B2 (ja) * 2018-03-05 2023-05-10 三井化学株式会社 車両用樹脂製バックドア
CN109532434B (zh) * 2018-12-29 2023-12-12 威马智慧出行科技（上海）有限公司 电动背门内板
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WO2021122485A1 (fr) * 2019-12-17 2021-06-24 Compagnie Plastic Omnium Se Hayon de véhicule automobile
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EP2504186B1 (de) 2013-09-25
RU2537011C2 (ru) 2014-12-27
US20120280533A1 (en) 2012-11-08
WO2011063538A1 (de) 2011-06-03
EP2504186A1 (de) 2012-10-03

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